Detection rules › Sigma
CMSTP Execution Process Access
Detects various indicators of Microsoft Connection Manager Profile Installer execution
Known false positives
- Legitimate CMSTP use (unlikely in modern enterprise environments)
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | |
| Stealth |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 10: ProcessAccess |
Rule body
title: CMSTP Execution Process Access
id: 3b4b232a-af90-427c-a22f-30b0c0837b95
status: stable
description: Detects various indicators of Microsoft Connection Manager Profile Installer execution
references:
- https://web.archive.org/web/20190720093911/http://www.endurant.io/cmstp/detecting-cmstp-enabled-code-execution-and-uac-bypass-with-sysmon/
author: Nik Seetharaman
date: 2018-07-16
modified: 2021-06-27
tags:
- attack.stealth
- attack.t1218.003
- attack.execution
- attack.t1559.001
- attack.g0069
- attack.g0080
- car.2019-04-001
logsource:
product: windows
category: process_access
detection:
# Process Access Call Trace
selection:
CallTrace|contains: 'cmlua.dll'
condition: selection
falsepositives:
- Legitimate CMSTP use (unlikely in modern enterprise environments)
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
CallTrace|contains: 'cmlua.dll'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CallTrace | match |
| field:"CallTrace" kind:match value:"cmlua.dll" |